Water heater



1937. o. L. BESINGER 2,090,323

WATER HEATER Filed March 20, 1936 2 Sheets-Sheet 1 .x ml

WIQWIIWI Aug. 17, 1937. O sm R 2,090,323

WATER HEATER Filed March 20, 1936 2 Sheets-Sheet 2 M ll III w h; {I

s I nuillllllllliulg a Patented Aug. 17, 1937 UNITED STATES PATENT OFFICE 4 Claims.

The invention relates to improvements in water heating devices and particularly to the construction and co-operative arrangement of the parts thereof.

An object of the invention is to provide an improved automatically controlled compact water heater for domestic or industrial use embodying means enabling water to pass therethrough and take up and carry the maximum amount of heat units.

Another object is to provide a heater of the character referred to with improved means, including water tubes connecting with headers, to increase the rate of circulation of the water therethrough, for preventing stagnation of said water.

Another object is to provide a heater of the character referred to with improved headers and an improved water tube assembly.

Another object is to. provide a heater of the character described which is constructed to facilitate ready assembly and dis-assembly of its major parts and which is inexpensive to construct and operate. f

The foregoing and such other objects of the invention as will appear hereinafter as the description proceeds will be more readily understood from a perusal of the following specification reference being had to the accompanying drawings, in which:

Fig. l is an elevational view of the improved heater showing parts partially broken away.

Fig. 2 is a horizontal sectional view taken approximately on line 2-2 of Fig. 1.

Fig. 3 is a fragmentary vertical sectional view taken substantially on line 33 of Fig. 2.

Fig. 4 is a vertical sectional View, partially broken away, of the improved water circulating unit.

Fig. 5 is a sectional View taken on line 5-5 of Fig. 4.

Fig. 6 is a sectional View taken on line 6-6 of Fig. 4.

Fig. 7 is a fragmentary perspective view of the upper header showing the tubes and pipes.

The improved heater preferably embodies a novelly constructed water heating and circulating unit preferably positioned at the upper end of an insulated shell or housing mounted over a suitablebase carrying burners of any approved type. The burners are disposed within the shell below the water circulating unit. The novel water circulating unit embodies improved means for carrying cold Water downwardly close to the burners wherev 5 it takes up the maximum amount of heat units and rapidly flows upwardly and out of the unit thereby insuring complete rapid circulation of the water and preventing its stagnation in the water tubes and headers.

As best shown in Figs. 1, 2 and 3 inclusive, the heater preferably embodies a vertically arranged double walled cylindrical shell ll, suitably in-' sulated as at [2, open at its bottom end and closed at its upper end by a suitable cap plate I3 having a stack opening l4 therein. An opening I5 is provided on one side of the shell ll adapted to be closed by a suitable door l6 which preferably is hinged at IT. The open lower end of shell II is fitted onto a suitable burner base 18, the latter preferably having a vertically disposed annular flange l9 arranged to fit closely within the shell II. The base l8 has another annular upwardly and downwardly extending flange 2| defining a central opening 22 which is suitably bridged by webs 23 which serve as a mounting for an oil burning unit 24. The burner unit 24' may be any standard type readily obtainable on the market which, as shown, preferably includes a pilot burner 25 and main burner 26, each of which obtain fuel oil through a thermostatically controlled valve unit 21 of known construction preferably mounted to one side of base I8 on the arm 28.

It is evident that regardless of the type of heating unit employed, or whether fuel oil or gas are used, air must be admitted into the interior of the shell I I to get proper combustion. Obviously, the air readily enters through the opening 22 in the burner base, passes around the burners and upwardly out of the shell through stack opening [4. As it is necessary to control the volume of air passing through the shell I I to insure proper combustion of the fuel, a suitable closure 29, preferably cup-shaped, is positioned, with flange 2i extending therein, for adjustment beneath the opening 22.

As best shown in Fig. 3, the closure 29 preferably is held in position by a bolt 3| which extends upwardly therethrough and has threaded engagement in webs 23 whereby adjustment of the bolt readily carries the closure 29 toward or away from the under side of burner base l8 to increase or decrease the space 32 ther'ebetween' The closure 29 preferably is quite deep to retain any overflow of fuel oil from the burners should the oil control valve 2! become impaired. Suitable legs 33 are provided on said base and, as shown, the legs preferably have adjustable foot portions 34 to facilitate horizontal positioning of the heater irrespective of the condition of the surface upon which the heater stands;

The water circulating unit 35, best shown in Figs. 4 to 7 inclusive, consists of an upper water header 36, including a crown sheet 31, and a plurality of open ended water tubes 38 depending therefrom. The water tubes 38 preferably are joined to the crown sheet 31 in suitable openings 39 therein, whereby said tubes communicate directly with the interior of the upper header 36. The tubes 38 preferably are spaced circumferentially and each tube is in axial alignment with a tubular protuberance 4| spaced above and connected to the crown sheet 31 by web 42. It is to b be noted that adjacent edges of webs 42 are joined circulating unit 35 preferably is connected with together to form a continuous vertical wall defin-' ing a central recess 43 into which the downwardly directed open end 44 of a cold water inlet pipe 45 extends. The vertical wall portion 42'has a horizontal portion 46 which merges into the protuberances 4| and the latter are cutaway as at 41 and connected for a portion of their length,

above said partition wall, by webs 48.- The header including the crown sheet, webs and protuberances, preferably are cast integral.

Interior pipes 49 are mounted one in each tubular; protuberance with their upper open ends arranged substantially flush with the horizontal flanges 46. These pipes have a tight fit in each protuberance and each depends into the respective tubes 38 and is centrally located relative thereto. A lower header 5| receives the open lower end of each tube 38 and integral shouldered lugs 52, depending from the top wall 53 of said lower header, embrace and support the open lower ends of pipes 49. The tubes 38 and pipes 49 are rigidly held in the position shown and said tubes and pipes cannot become displaced. After assembling the unit the ends of the outer tubes 38 are fused into the respective headers thus insuring water tight seams.

While the heater is in operation the water a large supply tank or directly with a water system and is filled with water through cold water inlet 45. When the fuel is ignited the hot gases therefrom rise within the shell ll around the lower header 5|, tubes 38, and upper header 35, thus bringing said members to a high temperature. The water within the unit immediately absorbs heat units therefrom and begins to circulate, the hot water passing out throughhot water outlet 54. Circulation of v water'through the water circulating unit is substantially as follows: The cold water, upon ehtering the central recess 43, from inlet 44, flows over flanges 46 into pipes. 49 and downwardly therethrough into the lower header 5| whereby, upon becoming heated, it circulates upwardly in tubes 38, around pipesj49, through openings 39 in the crown sheet and into the upper portion of theupper water header.

It is obvious therefore that the upward rush of hot water from, the tubes 38 into header 36 does not in any way interfere with the downward flow of cool water into the pipes 49, because the cooler water entering the pipes 49 is kept substantially confined within the recess 43, hence rapid circulation of the water therethrough is possible.

Although the present improvements have been shown as incorporated in a domestic water heater, the unit may be constructed in larger sizes for heating or industrial use without necessitating material structural alterations.

mostatically controlled fuel oil burner is shown,

other types of gas or oil burners or even a fire pot may be readily substituted therefore.

The improved heater is very sensitive to any heat, hence the slightest amount of heat immediately increases the temperature of water in the 5 described in detail in the foregoing specification it is to be understood that the various units makingup the improved water heater may embody such modifications in detail structure as will facilitate "manufacture and installation without departing from the spirit of the invention or the scope of the appended claims.

I claimz i 1. In combinationwith a water heater, a water circulating unit adapted to be mounted in said heater comprising, in combination, aheader including a crown sheet, a plurality of circumfer entially spaced tubular protuberances in said header spaced abovesaid crown sheet, a web connecting eachprotuberance with said crown, sheet, said webs being joined together to form an unbroken wall and define a central recess,

the wall of each protuberance above said webs being cut away in part to place said tubular protuberances in communication with the interior of said header,utub'es depending from said.

crown sheet one in axial alignment with each,

protuberance, a lower header connecting with the lower ends of said tubes, aninteriorpipe openat both ends arrangedin each tube extending up wardly into the respective. protuberance, said pipes extending into said lower headerbelow the lower end of said tubes, and means in said lower header to hold. said pipes spaced centrally in the respective tubes 2. A water circulating unit. of the character described comprising, in combination, a header including a crown sheet, a plurality of circum ferentially spaced tubular protuberances insaid header spaced above said crown sheet, an unbroken substantially vertical circumferential wall connecting a portion of the lower end of each protuberance with said crown sheet, said wall providing a central recess, each tubular protuberance being cut away in part above said wall to place said protuberances in, communication with said recess, tubes open at both ends d'epend v ing from said crown sheet one in axial alignment with each protuberance, said tubes communicating directly with the interior of said header outside said recess, a lower header'connecting with the lower ends of said tubes, an interior pipe open at both ends arranged. in each tube extending upwardly into the respective protuberance, said pipes extending into said lower header below the lower end of said tubes, and means in said lower header to hold said pipes spaced centrally in the respective tubes.

,3. A water circulating unit of the character described comprising, in combination, a header. including a crown sheet, a plurality of circum ferentially spaced tubular 'protuberances' in said headerspaced above said crown sheetj'an u n? broken substantially vertical circumferentialwall connecting 'a portion of thelower'end of each protuberance with said crown sheet, said wall providing a, recess, each tubular protuberance being cut away in part above said wall place said protuberances in communication with said recess, tubes open at both ends depending from said crown sheet one in axial alignment with each protuberance, said tubes communicating directly with the interior of said header, a lower header connecting with the lower ends of said tubes, and an interior pipe open at both ends arranged in each tube extending upwardly into the respective protuberance, said pipes extending into said lower header below the lower end of said tubes.

4. A heater of the character described comprising, in combination, a base, burners on said base, an insulated shell having its open lower end mounted on said base, a stack outlet in the closed upper end of said shell, a water header, including a crown sheet, mounted in said shell adjacent the upper end thereof having a cold water inlet and a hot water outlet, water tubes open at both ends depending from said crown sheet, tubular protuberances on the inside face of said crown sheet, one arranged above the upper open end of and in axial alignment with each tube, interior pipes open at both ends mounted one in each protuberance and arranged to depend inside the respective tube, a lower header into which each of said pipes extend connecting with the lower open ends of said tubes, said pipes extending below the ends of said tubes, and means in the lower header to hold the pipe ends in place.

OLLIE L. BESINGER. 

